Tax season has a way of turning up problems that have been sitting quietly in your books all year. The good news is that most of these signs are visible well before your accountant ever opens your file — if you know what to look for. Catching them now, instead of in March, means more time to fix them calmly instead of scrambling.
1. Your profit doesn’t match your gut feeling
If your books say you made significantly more or less than it feels like you did, that gap is worth paying attention to. Sometimes it’s nothing — cash flow and profit genuinely aren’t the same thing. But sometimes it’s a sign of miscategorized transactions, missing income, or expenses that got recorded twice. Either way, “I don’t know why the number looks like that” is a sign to look closer, not to assume it’s fine.
2. Reconciliation hasn’t happened every month
If you’re not sure whether your bank and credit card accounts have actually been reconciled each month — not just “looked at,” but formally matched line by line — that’s worth confirming before tax season rather than during it. Unreconciled months are where missing transactions and duplicates like to hide.
3. You have transactions sitting in “Uncategorized” or “Ask My Accountant”
A handful of these is completely normal. A long list of them going back months means there are real decisions still waiting to be made about what those transactions actually are — decisions that are much easier to make with August’s context fresh in mind than in April.
4. Personal and business expenses are mixed together
If personal purchases have been running through the business account (or vice versa) at any point during the year, that needs to be sorted out before tax time, not during it. Mixed transactions can mean missed deductions, inflated expenses, or — if the business is an LLC or corporation — real risk to the liability protection the entity is supposed to provide.
5. You’ve added a new income stream, platform, or integration this year
A new payment processor, a CRM that syncs to your accounting software, a new sales channel — any of these is a common place for errors to creep in quietly. Integrations don’t always sync perfectly, and new income sources sometimes get recorded inconsistently while everyone’s still getting used to them. If something new was added this year, it’s worth specifically checking that it’s flowing into your books correctly.
6. You can’t remember the last time someone looked at the whole picture, not just individual transactions
Entering transactions is necessary, but it’s not the same as someone stepping back monthly and asking whether the numbers as a whole make sense — whether income tracks with expected sales, whether expenses look proportionate, whether anything looks unusual. If no one’s been doing that kind of review, there’s a reasonable chance something has drifted without anyone noticing.
The takeaway
None of these signs mean something has gone seriously wrong. Most of the time, what they turn up is small and easy to fix. But small issues are a lot less stressful to deal with in October or November than they are in the middle of tax season, when there’s a deadline attached and less room to breathe. A quick review now can save a lot of scrambling later.